[time-nuts] 10MHz LTE-Lite - PPS accuracy?

Hal Murray hmurray at megapathdsl.net
Wed Dec 10 18:36:19 EST 2014

[Context is second PPS input.]

brayniac at gmail.com said:
> I think it depends if they are phase aligned or offset. If the interrupts
> are occurring at the same time, I would anticipate increased jitter. If they
> are offset I would not expect any negative impact. 

> A simple way to demonstrate the effect would be to feed the same pulse to
> two different PPS pins. The ISRs will compete when both interrupts fire.  

If you put a long cable between them, you can change the order of the 
interrupts by swapping things.  That may need a real driver and good 

These are my opinions.  I hate spam.

More information about the time-nuts mailing list